List Of Warnings And Alarms - Danfoss VLT Decentral Drive FCD 302 Operating Manual

VLT® Decentral Drive FCD 302
Operating Guide
On
Warn.
Alarm
Illustration 28: Status Indicator Lights
Warning indicator light
Warning On
Alarm Off
Trip lock On

6.8 List of Warnings and Alarms

The following warning and alarm information defines each warning or alarm condition, provides the probable cause for the condi-
tion, and entails a remedy or troubleshooting procedure.
6.8.1 WARNING/ALARM 4, Mains Phase Loss
Cause
A phase is missing on the supply side, or the mains voltage imbalance is too high. This message also appears for a fault in the input
rectifier. Options are programmed in parameter 14-12 Function at Mains Imbalance.
Troubleshooting
• Check the supply voltage and supply currents to the drive.
6.8.2 WARNING 5, DC Link Voltage High
Cause
The DC-link voltage (DC) is higher than the high-voltage warning limit. The limit depends on the drive voltage rating. The unit is still
active.
6.8.3 WARNING 6, DC Link Voltage Low
Cause
The DC-link voltage (DC) is lower than the low voltage warning limit. The limit depends on the drive voltage rating. The unit is still
active.
6.8.4 WARNING/ALARM 8, DC Undervoltage
Cause
If the DC-link voltage drops below the undervoltage limit, the drive checks for 24 V DC back-up supply. If no 24 V DC back-up supply
is connected, the drive trips after a fixed time delay. The time delay varies with unit size.
Troubleshooting
• Check that the supply voltage matches the drive voltage.
• Perform an input voltage test.
• Perform a soft-charge circuit test.
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Maintenance, Diagnostics and
Alarm indicator light
Off
On (flashing)
On (flashing)
AQ267036816112EN-000101 / 130R0208
Troubleshooting